Open AccessInterference Aware Routing Protocols for Underlay Cognitive Radio Networks
Author(s) -
Sami Touati,
Hatem Boujemâa,
Nazha Abed
Publication year - 2021
Publication title -
international journal of communications
Language(s) - English
Resource type - Journals
ISSN - 1998-4480
DOI - 10.46300/9107.2021.15.2
Subject(s) - computer network , computer science , dynamic source routing , link state routing protocol , routing protocol , zone routing protocol , static routing , routing information protocol , destination sequenced distance vector routing , wireless routing protocol , distributed computing , routing (electronic design automation)
In this paper, optimal and sub-optimal routing protocols are proposed for cognitive radio networks. We first investigate optimal routing that consists in searching among all paths, the one that minimizes the end-to-end outage while verifying interference constraint to primary receiver. A sub-optimal one-hop routing is proposed where the best relay is selected in each hop. The last routing protocol consists in decomposing the network in many sub-networks composed of K hops. Then the best route is determined in each of these sub-networks so that the K hops-outage probability is minimized. The proposed K-hops routing allows a good compromise between complexity and performance. The performance of different routing protocols are evaluated through simulation results in terms of outage probability.